Finding the Fourth Proportional to 20,757,977.68, 28,646,008.12 and 11,210,259
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Solution
The fourth proportional to 20,757,977.68, 28,646,008.12 and 11,210,259 is: 15,470,156.84
Step by Step Solution
- Step 1: Write the proportion equation
20,757,977.68 : 28,646,008.12 = 11,210,259 : x - Step 2: Convert to fraction form
20,757,977.68/28,646,008.12 = 11,210,259/x - Step 3: Cross multiply
20,757,977.68x = 28,646,008.12 × 11,210,259 - Step 4: Simplify right side
20,757,977.68x = 321,129,170,341,303.06 - Step 5: Solve for x
x = 321,129,170,341,303.06/20,757,977.68 - Step 6: Final answer
x = 15,470,156.84
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.